Evaluation of digital methods for energy calculation and timing pick-off in positron emission tomography
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2018
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Journal of Instrumentation
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Traditionally, pulse processing in Positron Emission Tomography (PET) has been based
on analog or discrete circuits forming a decentralized processing system. However, there is a
convergence for digital and integrated implementations due to the characteristics of the modern
electronic devices which are real-time processing capable, such as Application-Specific Integrated
Circuit (ASIC) and Field Programmable Gate Array (FPGA) with fast Analog to Digital Converters
(ADC). However, FPGA can provide fast implementation at relatively low cost and also enables the
development of sophisticated digital pulse processing algorithms to improve energy, position and
time resolutions in PET systems. Our group has developed and evaluated one energy calculation
and three timing pick-off methods for implementation onto an FPGA-based system. For a typical
PET detector setup, our charge integration method presents energy resolution similar to previously
designed PET detectors. The best performance for timing pick-off was achieved by the Initial Rise
Interpolation (IRI) method, where a coincidence time resolution of around 440 ps is suitable for
Time of Flight (TOF) PET. Future works include embedding the proposed algorithms in a FPGAbased
data acquisition system under development by our group which will be employed in a PET
prototype.
Como referenciar
MURATA, H.M.; MORALLES, M.; BONIFACIO, D.A.B. Evaluation of digital methods for energy calculation and timing pick-off in positron emission tomography. Journal of Instrumentation, v. 13, n. P09024, 2018. DOI: 10.1088/1748-0221/13/09/P09024. Disponível em: http://repositorio.ipen.br/handle/123456789/29327. Acesso em: 24 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.